The objective of this study is to measure the levels of ammonia and hydrogen sulfide in livestock manure composting facility according to seasonal condition. Mean concentrations of ammonia in livestock manure composting facility were 84.3 () ppm for spring, 115.2 () ppm for summer, 76.2 () ppm for autumn, and 38.1 () ppm for winter, respectively. Based on the results obtained from this study, the seasonal levels of ammonia in livestock manure composting facility were highest in summer followed by autumn, spring and winterroom (p<0.05). Mean concentrations of hydrogen sulfide in livestock manure composting facility were 7.46 () ppm for spring, 9.42 () ppm for summer, 8.15 () ppm for autumn, and 10.18 () ppm for winter, respectively. The livestock manure composting facility showed the highest levels of hydrogen sulfide in winter followed by summer, autumn and spring. However, there was no significant difference of hydrogen sulfide concentration among seasons (p>0.05).